1) The working principle and characteristics of IGBT high-frequency equipment: Å All solid state induction heating is achieved by outputting high-frequency current from the all solid state induction heating equipment, which generates an alternating magnetic field through the induction coil of the furnace body. It can penetrate the workpiece placed in the induction coil to induce current on the workpiece itself and rapidly heat the workpiece. Å The whole machine is divided into four parts: rectification part, inverter part, regulator circuit part, and operation protection circuit Rectification section: Our company adopts a full bridge rectification uncontrolled method for rectification, eliminating the need for large reactors, reducing interference with the power grid, and improving power factor Inverter section: The inverter adopts a zero voltage soft start method and is equipped with an automatic repeat start circuit, which can prevent occasional startup failure of the intermediate frequency power supply and improve the reliability of startup The inverter circuit adopts automatic frequency tracking and uses German Infineon IGBT as the power device to keep the entire circuit in a resonant working state, reducing losses Circuit part of the regulator: It adopts a high-frequency current closed-loop PI regulator, which always participates in the operation of the closed-loop during the startup process, ensuring stable system operation. Moreover, it is difficult to experience overcurrent tripping during system debugging and inverter failure Operation protection circuit section: The control circuit is equipped with various operations, protection circuits, the order of power on and off between the main circuit and the control circuit, as well as misoperation by users, which will not have any impact on the system. The specific protection functions include: Å Phase loss protection - detecting whether there is a phase loss in the three-phase AC input. If there is a phase loss, immediately protect and stop working. Å Leakage protection - It monitors the leakage of heat and provides immediate protection in case of leakage, increasing the safety of the equipment Overcurrent protection - system overcurrent cutoff protection to prevent equipment from damaging power devices due to overcurrent Overvoltage protection - monitors the power supply voltage and provides immediate protection when the power supply voltage is too high, effectively preventing damage to power devices Low water pressure protection - Cooling water pressure protection, immediately protects when the water pressure is too low, effectively preventing the induction coil from being burned out Over temperature protection - monitors the temperature of cooling water and radiator to prevent damage to power devices due to high temperatures All protections have a light alarm function 4、 User provided project: 1. Three phase 380V × 3 50Hz 60HZ, around 200KW power supply switch 2. A water circulation system and peripheral pipelines with a cooling water consumption of 23-32 m3/h 5、 Service commitment: 1. Technical guidance for installation and debugging 2. Implement (1+1) technical after-sales service for users, where a dedicated engineer provides year-round technical tracking service for each device after leaving the factory 3. The warranty period is 12 months. During the warranty period, if any equipment damage or component damage is caused by non-human factors, the seller shall provide free repair 4. Beyond the warranty period, we provide lifelong paid repair and maintenance services 7、 Shipping cost: 1. We are responsible for shipping to the domestic logistics station designated by the customer, and for foreign shipping, we are responsible for transporting to the domestic port designated by the customer.